Less than a week after having won approvel from Chinese regulators. Google announced today that the acquisition of Motorola Mobility Holdings, Inc. for $40.00 per share in cash or approximately $12.5 billion.

The acquisition will enable Google to supercharge the Android ecosystem and will enhance competition in mobile computing. Motorola Mobility will remain a licensee of Android and Android will remain open, Google said, complying to requirements set by China's Ministry of Commerce when the Chinese authority approved the acqusition last week. Google also plans to run Motorola Mobility as a separate business.

Larry Page, CEO of Google, said, "I'm happy to announce the deal has closed. Motorola is a great American tech company, with a track record of over 80 years of innovation. It's a great time to be in the mobile business, and I'm confident that the team at Motorola will be creating the next generation of mobile devices that will improve lives for years to come.

"Sanjay Jha, who was responsible for building the company and placing a big bet on Android, has stepped down as CEO. I would like to thank him for his efforts and am tremendously pleased that he will be working to ensure a smooth transition as long-time Googler Dennis Woodside takes over as CEO of Motorola Mobility.

"I've known Dennis for nearly a decade, and he's been phenomenal at building teams and delivering on some of Google's biggest bets. Dennis has always been a committed partner to our customers and I know he will be an outstanding leader of Motorola--and he's already off to great start with some very strong new hires for the Motorola team."

Dennis Woodside, CEO of Motorola Mobility, said: "Motorola literally invented the entire mobile industry with the first-ever commercial cell phone in 1983. Thirty years later, mobile devices are at the center of the computing revolution.

"Our aim is simple: to focus Motorola Mobility's remarkable talent on fewer, bigger bets, and create wonderful devices that are used by people around the world."

Woodside added: "Motorola Mobility has many outstanding leaders, including people who were behind the original RAZR in 2004 and recent successes like the Droid and RAZR MAXX. Our colleagues joining the team come from varied backgrounds, from DARPA to Amazon and NVIDIA, but they all share a track record of leading innovation at speed, and a great deal of excitement about the mission ahead."

The deal will help Google better compete with Apple's iPhone and gain more clout for its Android software as it expands in the hardware business. It also arms the company a trove of 17,000 patents to protect Android devices in legal disputes with competitors.

The acquisition had already been approved in Europe, the U.S. and other jurisdictions worldwide.